The tag I made for Snickers was too heavy, so I got him this one from Etsy the other day:
http://www.etsy.com/listing/68792813/teachers-pet-dog-pet-tag-luggage-tag
I'm a chemistry teacher, so I thought it was super cute! She has a whole bunch of other adorable tags in her shop. Thought you guys who just got new collars would be interested!